# physics please HELP !

74,755 results, page 61-
## Physics

If you stood atop a ladder that was so tall that you were twice as far from Earth's center, how would your weight compare with its present value? -
## Physics

At the end of a race a runner decelerates from a velocity of 7.00 m/s at a rate of 0.500 m/s2. (a) How far does she travel in the next 14.0 s in meters? -
## Physics

What is the resonant frequency in an RLC circuit if R=5 , C=6, and L=12 mH, and V-115 V? (a) 593 (b) 41,400 (c) 1560 (d) 1793 -
## Physics

In an experiment to explore the nature of the relationships between velocity, force, and acceleration, what important issues are being ignored? -
## physics

A 50kg person standing on both feet cover a surface about 13 cm x 12 cm. How much pressure is on the sole of their shoes? -
## Physics

In an experiment to explore the nature of the relationships between velocity, force, and acceleration, what important issues are being ignored? -
## Physics

In an experiment to explore the nature of the relationships between velocity, force, and acceleration, what important issues are being ignored? -
## Physics

How long does it take a plane, traveling at a speed of 170 m/s, to fly once around a circle whose radius is 3500 m? -
## PHYSICS

When the brake are applied to a moving car travelling 60km\hr it decelerate at uniform rate of 5m\s -
## physics

What is the magnitude of the displacement of a car that travels half a lap along a circle that has a radius of 170m ? -
## physics

A boy sledding down a hill accelerates at 2.00 m/s2. If he started from rest, in what distance would he reach a speed of 5.20 m/s? -
## physics

How much force is needed to accelerate a 125 kg block up a 35 degree include at 3.4 m/s2 if the coefficient of friction is 0.28? -
## Physics

Why is an ice cube at 0°C more effective in cooling soft drink than the same mass of water at0°C? -
## Physics

Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker? -
## physics

Determine the cubical expansion of a liquid of volume 20liters at 30Â°c and 20.35 liters at 100Â°c -
## Physics

Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker? -
## physics

if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace? -
## ap physics

You measure the radius of a wheel to be 4.16 cm. If you multiply by 2 to get the diameter, should you write the result as 8 cm or as 8.32 cm? Justify your answer. -
## Physics

A ball thrown into the air lands 38 m away 2.4 s later. Find the direction and magnitude of the initial velocity. -
## physics

What is the magnitude of the momentum of a car weighing 1,555 N when it is moving at a speed of 23 m/s? Express your answer in kg m/s. -
## Physical Science

What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles? -
## physics

An electric field of 630 V/m is desired between two parallel plates 15.9 mm apart. How large a voltage should be applied? -
## Physics (fix)

In a string and pulley problem, will friction increase or decrease the tension.can you please explain if you can? -
## Physics

If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds? A) 1.9 x 1020 e -
## physics

A body of mass 10kg in air and 4kg in water calculate the volume and its density -
## Mimi

post your thinking, or what is confusing to you on your chem/physics questions. I am not much of an answer giver. I do critique well. -
## physics

is this right?if 5.0m/s^2=6.0m/s-0/1.2s a=fn/m 5.0m/s=15.0N/3kg show that the 5.0m/s^2 acceleration can result from a net force of 15N exerted on a 3.ok cart -
## physics

a plane travels 5.0 x 10^2 while being accelerated uniformly from rest at the rate of 5.0 m/s. what final velocity does it attain? -
## Physics

The formula is x = 1/2 at^2 and I have managed to fill in the variables as this. d = 1/2 9.81 m/s^2 1^2 I want to say that my answer is 4.905 but I'm unsure. Can someone check it? -
## physics

A ball of mass xg is release from a height of 20m . Calculate the time taken to fall to the ground. -
## Physics

a runner moving at a speed of 5.60 m/s rounds a curved track with a 60.0 m radius. what is the runners acceleration? -
## Physics

How long does it take T-Rex to reach its food 200m away assuming that he starts from rest and accelerates at 4.00 m/s2? -
## physics

Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference, (b) its surface area, and (c) its volume? please help -
## Physics

If you pull a 10-kilogram cart along the ground for 5 meters using 2 Newtons of force,how high will it go before it stops? -
## College Physics

How much would you have to raise the temperature of a copper wire (originally at 20 ∘ C) to increase its resistance by 30% ? -
## physics

an athlete completes one round of circular track of radius R in 40 second what will be his displacement at end of 2minutes 20 second -
## Physics

Assuming the earth to be a uniform sphere of radius 6400 km and density 5.5g/c.c. find the value of g on the surface where G=6.67×10 -
## Physics

What net external force is required to give a 30 kg suitcase an acceleration of 2.5 m/s2 to the right? Answer in units of N -
## physics

What is the gravitational force on a 20Kg satellite circling the earth (Re = 6.4 x 10^6 m, Me = 6 x 10^24Kg) with a period of 5hr? -
## physics

If a cart is initially travelling at 3.5 m/s, and has a mass of 200g, what is it's kinetic energy (LEAVE OUT units of J)? -
## Physics

a woman on a bridge 75 high sees a raft floating at a constant speed on the river below. -
## physics

calculate the maximum increase in photon wavelength that can occur during Compton Scattering. (answer in pm). -
## physics

"If you have an inductor that has an inductive reactance of 125 ohms, on a 60Hz frequency, what would be the inductance in henry's?" -
## physics

suppose a ball thrown downward with initial velocity 3 m/s instead of being dropped a)what then would be its position after 1s and 2s ? b)what would its speed be after 1 s and 2 s ? -
## Physics

What is the car's forward acceleration,at a speed of 30m/s,when the driving force on the wheels is 650N -
## Physics

torque to move a block of m=200kg for 10m at an angle of 25 degree with a speed of 20m/s. -
## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? -
## physics

A body immersed in liquid has an upthrust of 140N with a density of 12kg calculate the velocity -
## physics

WHAT IS THE REASON BEHIND THE JISKHA"S TEACHERS TO BE NOTHING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(except Writeacher and STEVE) ARE THEY DAFT OR NUISANCE!!!!!!!!!!!!!!!!!! ANSWWER Me QUICKLY !!!!!!!!!!!!! -
## Physics

A car travels in a straight line for 4 h at a constant speed of 63 km/h. What is its acceleration? Answer in units of m/s^2? -
## Physics

A child slides down a hill on a toboggan with an acceleration of 1.5 m/s squared. If she starts at rest, how far has she traveled in 1.0 s, 2.0 s, and 3.0 s? -
## physics

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 . -
## physics

show that the acceleration is 7.5 m/s² for a ball that starts from rest and rolls down a ramp and gains a speed of 30 m/s in 4s -
## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s? -
## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s? -
## Physics

A boy sledding down a hill accelerates at 1.55 m/s2. If he started from rest, in what distance would he reach a speed of 6.90 m/s? -
## physics

Find the acceleration of the two blocks sliding down the incline in the figure below. (Take m1 = 1.1 kg and m2 = 1.8 kg. Indicate the direction with the sign of your answer -
## Physics

The hamiltonian shows you that the energy levels are purtered by the electric fields.The form of the matrix,you can see? -
## physics

The force of tension of a rope is 300N. If a man is 50 m above the ground, what is the longest time it could take him to get to the bottom? -
## physics

A stone of mass m kg is held h metres above the floor 50s.The workdone in joules over this period is -
## physics/electrical circuits

if there are eleven resistors of 33k ohms each in parallel, what is the total resistance? -
## physics

if the wheel on a car accelerates from rest at a constant rate of 1.5rev/s, how fast will it be turning after 3s. -
## physics

A car comes to rest uniform deceleration at the rate of 5.8 m/s2 for 14.3 seconds. What is distance did it travel during this time?? -
## physics

An elevator weighting 2500 N ascends at a constant speed of 8 m/s. How much power must the motor supply to do this? -
## AP Physics

What is the potential energy of an electron and proton in a hydrogen atom if the distance between them is 5.3*10^-11? ANSWER k=9*10^9 Q=1.6*10^-19 q=1.6*10^19 Ue=? Ue=KQq/r Ue=-4.4*10^-18 j -
## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? -
## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? -
## Physics

A 1250 kg car travelling at 60.0 km/h comes to a sudden stop in 35 m. What is the coefficient of friction acting on the brakes? -
## Physics

What exerts the force obn a rocket in outer space to make it move forward? -
## physics

You throw a ball downward from a window at a speed of 2.7 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below? -
## Physics

Find the magnitude and direction of the equilibrant force for these two concurrent forces: 13.5 N, E and 32.0 N, N. Pls HELP me answer this. Thank u very much. -
## Physics

"At what point between two masses of 20kg and 15kg located 1.0m apart, will the gravitational field strength equal zero?" -
## Physics

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at? Why? -
## PHYSICS

A girl rows 10 km downstream in 2 h. Her return trip takes 4 h. How fast can she row in still water. in km/h? -
## Physics

Calculate how much energy is stored in a 17μF capacitor when it is charged to a potential difference of 200 V -
## physics

Strictly speaking, you weigh a tiny bit less when you are in the lobby of a massive skyscraper than you do at home. Why is this so? -
## Physics

Two protons, an infinite distance apart are brought together to a separation of 1 nm. What is the initial potential energy of the system? -
## Physics

In the Theory of Special Relativity, the momentum of a massless particle is equal to which of the following? A. m0c^2 B. E2c^2 C. E/c D. E/c^2 -
## Physics

In the Theory of Special Relativity, the momentum of a massless particle is equal to which of the following? A. m0c^2 B. E2c^2 C. E/c D. E/c^2 -
## physics

what is the shortest possible time in which a bacterium could travel a distanceof 8.4 cm across a petri dish at a constant speed of 3.5 mm/s -
## Physics

If the fundamental frequency of an 70 cm long guitar string is 470 Hz, what is the speed of the traveling waves? -
## Physics

A 2473 kg elephant is walking at 3 m/s on a flat surface. How much kinetic energy does he have? Answer in Joules -
## Physics

A 2473 kg elephant is walking at 3 m/s on a flat surface. How much kinetic energy does he have? Answer in Joules or J -
## physics

A force of 10N is used to lift 600-kg ball from the ground to the a height of 1.8m when it is let go. What is the speed of the bal when it is let go? -
## physics PLEASE HELP ME

a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity -
## physics

A 8.2 kg object undergoes an acceleration of 2.5 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N -
## Physics

2point charges of 1mc & 4mcr places 0.15m apart find the null point between them..? -
## Science: physics

Why does the moon not require a push to keep it along its orbit around the earth? -I have to use Newton's first law of motion. -
## college physics

Is it possible for a frictional force to increase the mechanical energy of a system? If so, give examples. -
## physics

1. How much does it cost to operate a 75 W lamp continuously for 1 week if the power utility rate is 7/kWh? -
## physics

calculate the linear momentum of a truck with a mass of 13065kg that is traveling at 36m/s eastward. -
## physics

Which bug experienced the greatest accelera- tion? 1. Their acceleration is same. 2. Unable to determine. 3. the VW 4. the insect -
## Physics

If a car is going .197 meters per second, how long will it take to go 5 kilometers (assuming the ground is perfectly flat). -
## physics

a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay? -
## Physics

A person is travelling 6 km (E) then 4 km (N) and finally 2 km (W). Calculate the average speed And velocity. Show your work -
## College physics

You have a collection of six 1.0 kilo ohm resistors. what is the smallest resistance you can make by combining them -
## Physics

An object is thrown vertically upward with a speed of 31.8 m/s. How long does it take to reach this highest altitude? -
## physics

Forces of 9.93 N and 1.23 N act at right angles on a reddish-green block of mass 3.02 kg. How much acceleration occurs? -
## physics

If you dropped the ball, cylinder and the ring at the same time from a height of 6.35 cm, in what order would the hit the ground? -
## Physics

Find the electric potential at the centre of the square of side 1m at the four corners of charges of q1, q2,q3,and q4 are placed having values 3×10^-8C,-3×10^-8C,-5×10^-8C and 6×10^-8C respectively.